A.1 Flashcards
What are fields and why are they useful?
They are an interpretation of the phenomena of forces acting over a distance.
Visualising them can help our understanding of the Earth
Define electromagnetic radiation
The interaction of electric and magnetic fields
What is required when there is movement in fields?
Transfer of energy and work being done
What are electric fields?
Charged particles and changing magnetic fields
What are magnetic fields?
Permanent magnets, moving chargers and a changing electric field
What are gravitational fields?
Associated with masses
What are the three fields in NOS that need to be taught?
- Electric
- Magnetic
- Gravitational
What is energy?
It is the ability to do work, work done equates to the energy transferred
How did Einstein show that mass and energy are interchangeable?
By modelling it in an equation = E=mc2
